Hi,
I am trying to create a new Column "Key" by concatenating every column with header starting with "Level ". However, number of Levels are dynamic and varies across my source files.
| Level 1 | Level 2 | Level 3 | Key |
| A | B | C | A__B__C |
| D | E | F | D__E__F |
| A | E | F | A__E__F |
As I won't know in advanced how many Level columns are there, I have a function that detects them and store in a List variable called Level_List.
My question is if there's a way to replace the hard-coded column names (highlighted in red) in the following formula by my variable Level_List?
= Table.AddColumn( Source, "Key2", each Text.Combine( {[Level 1],[Level 2], [Level 3]}, "__") )
Doing this: = Table.AddColumn( Source, "Key2", each Text.Combine( Level_List , "__") )
gives me Level 1__Level 2__Level 3 for each row which contenate the columns headers as Text rather than the values stored within.
Thanks!
Nelson
